US3345547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Step motor control system including a three stage energization for each step
Assignee: Ampex Corp
•
Filing: 1965-01-21
•
Granted: 1967-10-03
•
Expires: 1985-01-21
Abstract
No abstract record available.
Inventors
- 👤 Peter F Dunne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:10
CPC Classifications
G; G06; G06K; G06K13/00; G06K13/18; G06K13/20; H; H02; H02P; H02P8/00; H02P8/32; Y; Y10; Y10S; Y10S388/00; Y10S388/907; Y10S388/921; Y10S388/923; Y10S388/933
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
58 words
IN A RECORDER SYSTEM HAVING A WEB-LIKE RECORDING MEMBER, THE COMBINATION COMPRISING: MOVING MEANS INCLUDING AN INCREMENTAL MOTOR FOR INCREMENTALLY STEPPING THE RECORDING MEMBER IN A FORWARD DIRECTION AND A REVERSE DIRECTION; AND MEANS FOR ENABLING SAID MOVING MEANS TO ACCELERATE IN A FORWARD DIRECTION, A REVERSE DIRECTION AND A FORWARD DIRECTION IN SEQUENCE DURING A SINGLE STEPPING
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |